Plan mode broken with task id error

[aldentharwood (Alden)]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I had Cursor generate a plan then I clicked build, but its broken and stuck now with an error that says “I need the TODO IDs to mark them in progress. Please share the existing TODO list (with IDs) so I can update and proceed in order.”.

I tried clicking build again, but same issue

Steps to Reproduce

Generated a plan and clicked build

Expected Behavior

Execute build

Screenshots / Screen Recordings

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.1.42
VSCode Version: 1.105.1
Commit: 2e353c5f5b30150ff7b874dee5a87660693d9de0
Date: 2025-12-01T02:18:26.377Z
Electron: 37.7.0
Chromium: 138.0.7204.251
Node.js: 22.20.0
V8: 13.8.258.32-electron.0
OS: Darwin arm64 25.1.0

For AI issues: which model did you use?

Agent, GPT-5.1 Codex Max

For AI issues: add Request ID with privacy disabled

ace2fdf5-b396-42e6-8c50-54e441f68b8c

Does this stop you from using Cursor

Yes - Cursor is unusable

[aldentharwood (Alden)]

Huh I changed to Gemini 3 Pro and clicked Build on the same plan and now its just been stuck saying “Planning next move” for 10 minutes or so

I also see that the TODO tasks at the bottom of the plan a) include tons of todos from a plan from days ago and b) are duplicated over and over again (the same set of old completed and new). Feature seems generally broken

[deanrie]

Hey, thanks for the report. Looks like you hit a known Planner regression in 2.1.x + to-do sync issues:

• Tracker: Planner broken in 2.1.0
• To-do sync: Cursor does not use a to-do list

Try these now:

• Cmd+Shift+P → Developer: Reload Window, regenerate plan and hit Build
• Create new chat + new plan, don’t edit old one
• Save plan to workspace and run from .cursor/plans file: Planning | Cursor Docs
• Ask agent to “rewrite plan”, then Build
• Close all active tab sessions, restart Cursor

Please share:

• Console logs from Help → Toggle Developer Tools during “I need the TODO IDs…” error
• Does it repeat in new chat with fresh .cursor/plans file?

We’ll link your case to main tracker. Let me know what helps.